Filter



R. D, HILL.

.July 14, 1936.

FILTER Filed Sept. 17, 1955 Patented July 14, 1936 UNITED STATES mTER Bolo D. Hill, Los Angeles, Calif., assigner of onehall to Guy S.'Tucker, Los Angeles, Calif.

Application September 17, 1935, Serial No. 40,880

6 Claims. (Cl. 21o-165) My invention relates to an oil lter for motor vehicles, in which the oil from the crank case of the engine is pumped through the iilter to re- .move carbon particles and other sediment.

It is an object of this invention to provide an efficient oil iilter having a glass container through which the functioning of the filter may be observed at all times. A so-called cartridge is removably mounted in the container and provided with a sediment chamber and i'lltering means so constructed that the entire iiltering surface is used at all times, irrespective of the amount of sediment collected therein. A common type of oil lter for automobile engine has its ltering eiliciency impaired as the sediment is increased. In the present construction the iilter cloth embraces the sediment chamber and receives the oil to be filtered from the upper portion only of said chamber.'

m Another object of the invention is to provide an even flow of the oil to be ltered by means of an air cushion in the container.

With the above and other objects in view which will appear as the description proceeds,

my invention consists in the construction and combination of parts hereinafter described and claimed. In the accompanying drawing which forms a part of the speciiication I have illustrated the preferred embodiment of my invention, and in which,

Fig. 1 is a vertical central section through my lter.

Fig. 2 is a horizontal section taken on the lines 22 of Fig. 1.

Fig. 3 is an enlarged sectional View showing the position of the iilter cloth during the operation of iiltering.

Referring to the drawing, I indicates a container preferably made of glass. It is preferably made slightly tapering towards the bottom and is provided at its upper part with an annular shoulder I' which is engaged by a cover plate holding ring 2. The cover plate 3 forms with a gasket 4 an air-tight closure for the container I and is clamped in position by means of clamping bolts 5 connecting the holding ring 2 with the cover plate 3. v

A head 6 provided with a nipple 1 is screw threaded centrally of the cover plate 3. The

head 6 is providedwith an oil inlet duct 8 leading to an inlet port 9 in the nipple 1 and an oil outlet port I9 which leads to a screw threaded port II in the nipple l. It should vbe noted that the port I I is located centrally in the nipple l while the inlet port 9 is located eccentrically thereof. A nut I2 screw threaded on the nipple 'I forms with the gasket I3 an air-tight connection between the head i and the chamber and also locks the head 6 securely in place.

A vertical oil outlet pipe I4 is threaded in the 5 port II of the nipple 'I and extends downwardly into the lower end of the container I. 'I'he cartridge indicated as a unit I5 is removably mounted on the outlet oil pipe I4. It consists of a top I6 and a bottom I'I between which a tubu- 10 lar metal cylinder I8 is mounted. The metal cylinder I9 is provided with a vertical slit I8' for the reception of the lateral edges of a iilter cloth I9 embracing the cylinder I8. The resiliency of the cylinder I8 permits the slit I8' to be spread l5 apart so that the lateral edges I9 of the filter cloth may be inserted in the slit and securely held in position. 'I'he cylinder I8 with the filter cloth I9 mounted thereon externally is secured to the tops I6 and II respectively, by inserting 20 the ends of the cylinder I8 and the lter cloth I9 in corresponding annular channels I6 and I1' in the top I6 and the bottom II. The top I6, the bottom I'I and the cylinder I8 form a sediment chamber 24. An open ended tube 20 of 25 a size to iit snugly upon the oil outlet pipe I4 is positioned centrally through the top I6 and bottom I1, the ends of the tube 2li being slightly upset as indicated at 20' so as to lockvthe top and bottom, and the cylinder I8`with lits lter -30 cloth I9 securely together.

The top I6 is provided with an upstanding iiange 2 I, the top of which engages the underface of the cover plate 3 and forms therewith an oil distributing chamber 22. A plurality of perfora- 35 tions 23 in the top I6 conduct oil into the sediment chamber 24. It should be noted that none of the perforations 23 are in vertical alignment with the oil inlet port 9 for a purpose hereinafter described. In the upper end of the cylin- 40 der I8 a plurality of oil outlet ports 25 are provided. A lock nut 26 screw threaded on the pipe I 4 holds the cartridge I5 in position. Operaton.-Oi1 enters the iilter by means of a screw connection 21 communicating with the 45 oil inlet duct 8 and passes through the port 9 into the oil distributing chamber 22, which port 9 as stated before, is not in vertical alignment with perforations 23 leading to the sediment chamber 24; the object being to cause the oil to iiow with- 50 out pulsation into the sediment chamber 24. The oil on reaching the chamber 24 will fill the same until it overiiows through perforations- 25; particles of carbon'and other vsediment. tending to settle in the bottom of the sediment chamber 24 55 so that relatively clean oil passes through perforations 25 between the narrow space formed between the filter cloth I9 and the cylinder I8.

In Fig. 3 is illustrated what takes place in the filtration of the oil. The filter cloth I9 oiiers resistance to the passage of the oil therethrough. This resistance causes the oil to form a liquid sleeve between the outside of the cylinder I8 and the insideV of the filter cloth I9 as illustrated in Fig. 3. 1n this manner substantially the entire lter cloth is utilized, irrespective of the accumulation of sediment within the sediment chamber 24. The ltered oil will ow from the outer surface of the iilter cloth I9 and drop to the bottom of the container I and accumulate therein. Owing to the fact that the closure plate 3 and the head 6 form a hermetical seal for the container I, the air entrapped in container I will be compressed so that the compressed air in container I will form an elastic cushion, evenly forcing the oil through oil outlet pipe I4 through the outlet duct I0 in the head and through a screw threaded connection 28 in its passage to the crank case of the engine.

When it is desired to replace the cartridge I5, clamping bolts 5 are loosened and the container I is removed. By removing the lock nut 26 the cartridge I5 may be slipped downwardly and off the pipes I4 and a new cartridge I5 may be mounted in its place.

Various changes in the construction and arrangement of parts may be made by those skilled in the art without departing from the spirit of my invention as claimed.

I claim:

l. An oil filter, comprising a glass container, a removable cover plate therefor, means for clamping the cover plate on the top of the container, a cartridge removably mounted and extending downwardly from the cover plate into the container, said cartridge comprising a cylindrical sediment chamber having a top and bottom and a side wall, said side wall comprising a resilient tube having a vertical slit and provided with perforations in its upper end, a illter cloth embracing the slit tube and having its lateral edges clamped in the slit, the top of said cartridge being provided with an upturned iiange to form an oil distributing chamber and provided with one or more perforations leading to the sediment chamber, a head mounted on the cover plate and provided with an oil inlet duct and an oil outlet duct, said oil inlet duct communicating with the oil distributing chamber and being out of vertical alignment with the perforations in the top o1' the sediment chamber, an oil outlet pipe connected to the oil outlet duct in the head and extending downwardly through the bottom and top of the sediment chamber to the lower part of the container, and locking means holding the cartridge on the oil outlet pipe against the cover plate.

2. An oil filter comprising a glass container, a. removable cover forming a hermetic seal therefor, a cartridge removably mounted and extending downwardly from the cover into the container, said cartridge comprising a sediment chamber having a top and bottom and a side wall, said sediment chamber being imperforate except at its upper portion, there being a series of openings in the upper portion of the said side wall, a lter cloth embracing the side wall, the top oi.' said cartridge being provided with an upturned flange to form an oil distributing chamber and provided with one or more perforations leading to the sediment chamber, a head mounted on the cover and provided with an oil inlet duct and an oil outlet duct, said oil inlet duct communicating with the oil distributing chamber, an imperforate oil outlet pipe connected to the oil outlet duct in the head and extending downwardly through the top and bottom of the sediment chamber to the lower part of the container, and means for locking the cartridge against the cover. A

3. An oil lter comprising a container, a removable cover forming a hermetic seal therefor, a. cartridge removably mounted and extending downwardly from the cover into the container, said cartridge comprising a sediment chamber having a top and a bottom and a side wall, said sediment chamber being imperforate except at its upper portion, there being a series of openings in the upper portion of said side wall, a iilter cloth embracing the side wall, the top of said cartridge forming with the cover an oil distributing chamber and provided with one or more perforations leading to the sediment chamber, an oil inlet duct passing through the cover and communicating with the oil distributing chamber, an oil outlet duct passing through the cover, an imperiorate oil outlet pipe connected to the oil outlet duct and extending downwardly through the top and the bottom of the sediment chamber to the lower part of the container, and means for locking the cartridge against the cover.

4. An oil filter, comprising a container, a removable cover forming a hermetic seal therefor, a cartridge removably mounted and extending downwardly from the cover into the container. said cartridge comprising a cylindrical sediment chamber having a top and a bottom and a side wall, said sediment chamber being imperforate except at its upper portion, there being a series of openings in the upper portion of said side wall, a lter cloth embracing the side wall, an oil distributing chamber on the top of the cartridge and provided with one or more perforations leading to the sediment chamber, an oil inlet duct passing through the cover and communicating with the oil distributing chamber, an oil outlet duct passing through the cover, an imperforate oil outlet pipe connected to the oil outlet duct and passing through the cartridge to the lower part of the container, and means for locking the cartridge on the oil outlet pipe.

5. An oil illter, comprising a container, a removable cover forming a hermetic seal therefor, a cartridge removably connected to the cover and extending downwardly into the container, said cartridge comprising a cylindrical sediment chamber having a top, a bottom and a side wall, said sediment chamber being imperforate except at its upper portion, there being a series of openings in the upper portion of said side wall, a iilter cloth embracing the side wall, an oil distributing chamber on the top of the cartridge and having one or more perforations communicating with the sediment chamber, an oil inlet duct passing through the cover and leading into the oil distributing chamber, an oil outlet duct passing through the cover, an imperforate oil outlet pipe connected thereto and extending downwardly to the lower part of the container, and means for locking the cartridge in position.

6. An oil lter, comprising a container, a re- 70 movable cover forming a hermetic seal therefor, a cartridge removably mounted and extending downwardly from the cover into the container, said cartridge comprising a sediment chamber having a top, a bottom and a side wall. said sedisediment chamber, an oil outlet duct passing ment chamber being imperforate except at its through the cover, an imperforate pipe connected upper portion. there being a series of openings thereto and extending' to the lower part of the inthe upper portionof said side wail, atilter cloth container, and means for locking the cartridge 5 embracing the side wall, an oil inlet duct passing in position.

\ through the cover and communicating with the ROLO D. HILL. 

